I need 40% equity. The problem is that at the game I think - how can I fold this. I remember making laydowns with good hands which were actually bad as I figured out when discusing. So don't want to miss value. And also - I am doing good if he has AK, or even AJ - then I crush him. With AJ this player would probably want to stackoff for protection.

Well, just think of being in such a huge multiway pot.
I'd really rather just Bet/Fold it here, so many flushes possible and it's even very likely. You at the best might face something like pair+FD or A2. But even against any pair+FD our equity ain't very good.